To calculate the percent decrease, we need to find the difference between the two averages and express it as a percentage of the initial average.
The difference between the averages is 3.2 - 2.8 = 0.4 miles per week.
To express this difference as a percentage of the initial average, we divide by the initial average and multiply by 100.
0.4/3.2 * 100 = 12.5%.
Therefore, Shivani's average has decreased by 12.5%.
According to her running log, Shivani averaged 3.2 miles per week last month and 2.8 miles per week this month. By what percent has her average decreased
1 answer